Google products are no strangers to mashups from all forms of enthusiastic users and 3rd parties, but you know something cool is brewing when Google mashes up two of their most visionary services: Maps and Book Search. Recently on the Google Book Search blog, David Petrou announced this cool new feature, which they've added to the "About this Book" section of books you find in Google Book Search. Now, not all books will that have text about a location or two will get a map link (at least for now), but the ones that do will also include links to the actual pages of the book where a mapped location is mentioned.

If you want to see how cool this all is, the announcement post includes links to quite a few examples of books they've already mapped, such as Around the World in Eighty Days, Illustrated New York (1888) and The Travels of Marco Polo.